MESON Chess Problem Database

Problem Display
PID: 10107 (8/2b4K/2B2Q2/5PR1/5kqp/3R2N1/8/6B1 w - - 0 1)

Gooderson, Arthur R

Correspondence Chess, 1962

8/2b4K/2B2Q2/5PR1/5kqp/3R2N1/8/6B1

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Be3#
    • 1...Qe2
      • 2.Sxe2#
    • 1...Qf3
      • 2.Rxf3#
    • 1...Qh3
      • 2.Se2#
      • 2.Sh5#
      • 2.Be3#
      • 2.Rf3#
      • 2.Rd4#
    • 1...Qxf5+
      • 2.Qxf5#
    • 1...Qh5+
      • 2.Sxh5#
    • 1...Qxg3
      • 2.Rd4#
    • 1...Qxg5
      • 2.Qd4#
    • 1...hxg3
      • 2.Be3#
      • 2.Rd4#
  • Tries
    • 1.Bh2?
      • threat
        • 2.Se2#
        • 2.Sh5#
      • 1...Qxf5+
        • 2.Sxf5#
        • 2.Qxf5#
      • 1...Qh5+
        • 2.Sxh5#
      • 1...Qxg3
        • 2.Rf3#
      • 1...Qxg5
        • 2.Qd4#
      • 1...Qe2
        • 2.Sxe2#
        • 2.Sh5#
      • 1...hxg3!
    • 1.Qd6+?
      • 1...Kxg5
        • 2.Qh6#
      • 1...Bxd6!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Rxg4#
      • 1...Qxf5+
        • 2.Rxf5#
      • 1...Qh5+
        • 2.Sxh5#
      • 1...Qxg3
        • 2.Rd4#
      • 1...Qxg5
        • 2.Qd4#
      • 1...hxg3
        • 2.Be3#
        • 2.Rd4#
      • 1...Qd1
        • 2.Be3#
      • 1...Qe2
        • 2.Sxe2#
      • 1...Qf3
        • 2.Rxf3#
      • 1...Qh3
        • 2.Se2#
        • 2.Sh5#
        • 2.Be3#
        • 2.Rf3#
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(b);::B(A)
    • Q(b);N_GUARD::S(C),XQ(b)
    • Q(b);N_GUARD::R1(B),XQ(b)
    • Q(b);CHECK,OGATE,P_SPINQ(b),XP(D)::QAR1(G),XQ(b)
    • Q(b);CHECK,N_GUARD::S(C),XQ(b)
    • Q(b);XS(C)::R(B)
    • Q(b);SBLOCK,XR(E)::QAR2(G)
  • Tries
    • Try
      • B(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);CHECK::B(A)+S(C),DCHECK,XQ(b)
        • Q(b);N_GUARD,P_SPINQ(b),XS(C)::R1(B)
        • Q(b);SBLOCK,XR(E)::QAR2(G)
      • Refutation
        • P(c);P_SPINP(c),XS(C)
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(E)::QAB1(G)
      • Refutation
        • B(d);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • R1(E),XQ(b)
    • Vars
      • Q(b);CHECK,OGATE,XP(D)::R1(E),XQ(b)
      • Q(b);CHECK,N_GUARD::S(C),XQ(b)
      • Q(b);XS(C)::R(B)
      • Q(b);SBLOCK,XR(E)::QAR2(G)
      • Q(b);::B(A)
      • Q(b);N_GUARD::S(C),XQ(b)
      • Q(b);N_GUARD::R1(B),XQ(b)
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